Connecticut’s Invasive Aquatic Plant, Clam, and Mussel Identification Guide
Water Quality Testing 2023
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Lake To be Chemically Treated For
Large-leaf Pondweed on June 15, 2023
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Lake Chemically Treated For
Curly-leaf Pondweed on April 25, 2023
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Water Quality Testing
Lake Chemically Re-treated For
Weeds on July 28, 2022
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Lake Chemically To be Treated For
Vallisneria & Pondweed on April 20, 2022
Lake Chemically Treated For
Curly-leaf Pondweed on April 20, 2022
Water Quality Testing Results
June 7th -August 25th 2021
High levels of bacteria shown for 7/20/21 sampling is attributed to the high volume of runoff from the heavy rains received during the previous week. These levels are still well below the State standards for recreational use of the lake.
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Lake To Be Chemically Treated For Tapegrass (Vallisneria)
Thursday July 15th, 2021
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Water Quality Sampling Locations
Connecticut Department of Public Health water quality provides that a concentration of E. coli organisms less than or equal to 235 per 100 ml is generally considered satisfactory for a bathing area sample. Weekly Cedar Lake water testing results have historically fell well below the state standards.
Cedar Lake follows the state guidelines for water quality testing which includes NOT testing within 48 hours of a hard rain to avoid skewed readings. Studies conducted by World Health Organization (Guidelines for Water Quality, Volume 1, 2008) and the EPA have shown that E. Coli levels can increase significantly after a heavy rain (heavy rain = .30” inches per hour or .75” of rain in a 24 hour period). The runoff from heavy rains carries animal waste (i.e. geese, ducks, dogs, raccoons, skunks, etc.) from surrounding property and streets directly into lakes and streams during heavy rains and will increase E. coli bacteria levels until the water dissipates. CLOA did, however, intentionally test after a significant rain on June 26th, 2018 to determine how much higher the results would be. Readings significantly increased, but stayed within state limits.
Weekly results will continue to be posted. If a result meets or exceeds state levels, another test will be performed. If levels are still high then the CLOA Communication Plan will be invoked.
Safe enjoyment of Cedar Lake is our priority. Please contact us if you have any questions or concerns.
Sincerely,
CLOA Board of Directors
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Lake Chemically Treated For Curleyleaf Pondweed and Broadleaf Pondweed
Thursday May 20, 2021
